Catchfire calling someone a racist is a serious charge. It implies her work is hate speech which is a criminal offense. So, no, I'm not about to call Ms Wente a racist. If you feel she is, you are welcome to contact the RCMP with your concerns and evidence. That would stop her voice, if that's the outcome you wish.
You might also keep in mind calling someone a racist in a public forum in Canada is also potentially libelous. So, again, no, it's not a label I would choose to apply to Ms Wente as that would be imprudent.